Present value income stream
negative flow of $100 per year for 3 years, a positive flow of $200 in the 4th
year, and a positive flow of $300 per year in Years 5 through 8. The
appropriate discount rate is 4 percent for each of the first 3 years and 5
percent for each of the later years. Thus, a cash flow accruing in Year 8 should
be discounted at 5 percent for some years and 4 percent in other years. All
payments occur at year-end.





